Atmel Xplained Evaluation Board ATXMEGAA3BU-XPLD ATXMEGAA3BU-XPLD Scheda Tecnica

 

8394B-AVR-02/12 

The Atmel AVR XMEGA-A3BU Xplained kit is intended to demonstrate the Atmel 
AVR ATxmega256A3BU microcontroller. 

shows the available feature on 

the board. 

Figure 3-1. Overview of the XMEGA A3BU Xplained kit. 

The ATxmega256A3BU on the XMEGA-A3BU Xplained is pre-programmed with a 
boot loader and a default firmware. The detailed description of the software is 
available in the XMEGA-A3BU Xplained Software User Guide 
(

The kit needs an external power supply that can deliver 5V and up to 500mA. The 
actual current requirement for the board is much less than 500mA but in order to be 
able to power optional expansion boards this margin is recommended. 

The power can be applied to the board either via the USB connector or on pin 10 on 
the header J3. The USB connector is the preferred input because it is then possible to 
connect expansion boards on top of the J3 header. 

The 5V (USB supply voltage) is regulated down to 3.3V with an onboard LDO 
regulator, which provides power to the entire board. Expansion top boards that 
require 5V will get this from the header J3 pin 10. 

As part of an evaluation of the ATxmega256A3BU, it can be of interest to measure its 
power consumption. Because the XMEGA has a separate power plane 
(VCC_MCU_P3V3) on this board it is possible to measure the current consumption